Lawn-mower



( 3 sheets -sh'eet 1.

W. L. FRISBTE.

9 LAWNMOWER. No. 379,949. Patented Mai. 27, 1888.

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(No Model.) v 3 Sheets-Sheet- 3.

W. L. v 19191213.

LAWN MOWER.

No. 379,949. Paten tjed Mari. 2'7

N PETERS PMlD-Lifllugnphcr. Washington. D, C.

UNITED STATES WILLIAM L. FBISBIE, or SYRACUSE,

' PATENT ()FFICE'.

TO JAMES C. KENYON, OF SPRINGFIELD, MASSACHUSETTS.

LAWN-MOWIER.

SPECIFICATION forming part of Letters ,Patent No. 379,949, dated March.27,1888.

Application filed July 14, 1887.

Serial No. 244.274. (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM L. FRISBIE, a citizen of the United States,residing at Syracuse, county of Onondaga, and State 'of New York, haveinvented a new and useful Lawn- Mower, of which the following is aspecificati'on.

to mechanism for adjusting the position of the stationary cutterrelative to the rotary cutter; the second part to an adj ustablejournal-bearing for the cutter-shaft; the third to a handleholdingdevice; the fourth to a traction-roller, and the fifth to a truck-wheeljournal and journa1-bearing; and the invention'consists in thecombination and construction as hereinafter described, and moreparticularly pointed out in the claims.

My invent-ion is fully illustrated in the accompanying drawings, inwhich Figure I is an elevation of the outside of part of the wall orside of the machine seating one end of the stationary cutter. Fig. IIshows the same seen in reverse. Fig. III is an outside view of thestationary cutter-moving device. Fig. IV showsthesalne in reverse. Fig.V is an edge view of the same part. Fig. VI is an end view of thestationary cutter. Fig. VII is a front elevation of the ahove-enumeratedparts assembled and in partial section on the dotted line 00 0c of Fig.I. Fig. VIII is an elevation of one end of the rotary cutter withaportion of the side wall of the machine shown in section. Fig. IX is anend view of theadjustable journal-bearing sleeve for the cuttershaft.the handle-holder belonging to one side of the machine, and showing onefork of the handle, while Fig. XI is the same view of the holder withstud-bolt G in section, showing the fork of the handle in anotherposition. Fig. XII

' is an edge view of part of one fork of the hanbearing of onetruckwheel.

dle. Fig. XIII is a plan view of part of a traction-roller. Fig. XIV isa side elevation of one wheel thereof. Fig. XV is a view of detailscomposing the journal and journal- Fig. XVI is a vertical sectionthrough the journal .and journal-bearing of a truck-wheel. Fig. XVII. isaside elevation of the lawn-mower with the (lap or guard plate" removed.Fig. XVIII is The first part of my improvements relates,

Fig. X is an elevation or side view of a detached view of the cap orguard plate. Fig. XIX is a longitudinal vertical section with parts inelevation. Fig. XX is a detail section of a portion of one of the sidewalls. Fig. XXI is a side elevation of the journalbearing sleeve.

A is a side wall of alawn-mower, including the cap or guard plate, and,as shown in Fig. I, is provided with an opening, a, therethrough in theform of a vertical slot, within yet admits of a limited verticalmovement of the cutter, as is clearly shown.

c is a screw-pin projecting outward from the wall perforated by openinga,and near the edge of said opening, and D is a disk perfo- ;NEW YORK,ASSIGNOR OF ONE-HALF rated axially to receive the bolt 12 as a jour nal,and provided upon its inner face with a spiral groove engaging with thescrew-pin c.

The bolt 11 is provided with a head,as shown,

to bear upon the backpf the disk,-and the disk I is adapted to berotated by any convenient form ofspanner or wrench.

When assembled, as seen in Fig. VII, and it is desired to adjust thestationary cutter B to the rotary cutter, the bolt b is turned a shortdistance to release disk D,which is then rotated to move, by means ofits spiral groove and the screw-pin c, the stationary cutter to therequired point, to which it is held by sim ply again tightening the bolt1). I

In Fig. VIII an adjustable journal-bearing for the rotary cutter-shaft Ois shown. This bearing is formed of a sleeve, E, on said shaft, which isreceived in a socket or recess in wall A,within which socket the sleeverests. The shaft 0 has its bearings in wall A. A' camsurface, 6, isformed on the bottom of the socket. or recess, which corresponds with asimilar cam-surface, 6, upon one end of sleeve 1 over the machine.

E. f is a binding-screw for securing sleeve E in place. f is an angularhead, by means of which the sleeve is adjusted.

The sleeve Eis shown in dotted lines provided with a conical mouthbearing against a corresponding shoulder upon shaft 0, though verticalshoulders upon both surfaces would answer the same purpose.

As the journal surfaces of sleeve E and shaft G become worn, theset-screw f is looscued, and the sleeve 1*) rotated by its head to takeup the wear, and being in the required position, is secured there by thescrew f.

The handle-holder, in combination with one fork of a handle, is asfollows: Abolt,G,uniting the disks H on and integral with opposite sidewalls, A, of the machine, has an outwardly-projecting head, g, forming aflange upon said bolt, the inner face of which is the thickness of onefork, K, removed from the face of the disk.

The projecting part of bolt G forms a fulcrum at times for the fork K tobe rotated upon. Upon one side of the bolt, and raised from the face ofthe disk, is a block, h, one side of which forms a bearing for the endof fork K when in the position shown in full lines in Fig.X-itsoperativeposition-while theother side of said block forms a bearingfor the fork when in the position shown in dotted lines in the samefigure, and when the handle is swung Upout-he opposite side of bolt Gfrom block h is a block, 0', forming,with block h, a support for thefork K in either position shown in Fig. X.

Connecting the two blocksh z is a segmental rim,m, having the axis ofthe bolt G for its center and removed from the longer bearing side ofblock i, to leave a shoulder or second bearing side thereto.

The fork K has upon its end a hook, at, which catches against thisshoulder of block i when the fork IS in the position indicated by dottedlines, Fig. X, while the rim m, by contact with the end of hook n, holdsthe fork beneath the bolt G in revolving and at other times, and socauses the bolt-head to be suflicient to retain the fork K to the diskH.

The end of fork K is of the configuration shown, with curved inner andouter edges having the axis of bolt G as their center when in theoperative position shown in Fig. X. When the machine is being operated,the forks of the handle bind upon the bolt G as an axis and fulcrum. Toplace the fork in the position indicated in dotted lines in the samefigure, it is simply oscillated, and may be restored to an operativeposition again by simply pulling over the handle, permitting the weightof the fork to bear against the bolt; but when the fork isin theposition shown in dotted lines, Fig. X, and it is desired to remove thehandle, the entire weight is allowed to rest upon the blocki and rimadjacent thereto, and the fork K is rolled upon the block i as a fulcrumto entirely clear it from the bolt G with its head, and so leave it freeto be entirely removed.

This is shown in Fig. XI, and in replacing the handle it is onlynecessary to let the hook n follow down the longer side of block i untilit passes over the shoulder thereof, when the handle can be swungintoeither position shown in Fig. X.

In this device the head of the bolt, required at this point to assist inframing the sides of the machine, is the only thing needed to retain thefork of the handle to the other parts of the disk, and the handle, withits forks, may

be removed or replaced instantly without care.

My traction roller consists of a series of wheels, I, having a number ofcorrugations,0, in their peripheral rims p, and having hubs providedwith clutches formed of teeth 1 and interdental spaces 8 proportioned innumber to the corrugations upon the wheel-rims, so that one wheel may beclutched with the next wheel, to either hold the two, as shown in thefirst two wheels, Fig. XIII, with the ends of the corrugations oppositeand in contact, or, as seen in the second and third wheels, with thesides of the corrugations in close contact.

The wheels I are journaled upon the usual axle, J, and through the lastwheel,(not shown,) are clutched to the driving-gear of the ma chine.

The clutches upon the hubs are made long enough to engage in eitherrelative position of adjacent wheels, and the machines are supplied witha number of wheels I suflicient to build the roller up as a solid drum,by the removal of more or less of which and the adjustment of theremainder the weight and traction or holding-surface of the roller maybe varied at will.

In the case of newly-seeded ground, where the resistance to the knivesis slight and less traction is needed,and where a weighted roller wouldbe of advantage to the grass itself, the roller may be used solid; butwhere the sod is heavy a roller built up of alternate wheels I, arrangedas the first two wheels in Fig. XIII, works to advantage by the greathold the roller takes upon the sod, which penetrates the intersticesbetween the individual wheels.

Thejournal and bearing-of my truck-wheel are constructed as follows:Upon the truckarm L is a stud, 61, having an angular boltopening, a,therethrough. Upon the stud d, with its base against the truck-arm, isplaced awasher, O, of the configuration of a truncated cone. Spurs 0from the base of washer 0, received in opposite depressions, Z, in theface of truck-arm L, prevent any rotation of washer O on the stud as itsaxis. The truckwheel W, axially counter-bored to half of the depth ofits hub to correspond to the conesurface of washer O, is placed over andrests upon said washer The wheel W is similarly counterbored in its hubto the center from and have its inner end comenearly in contact.

withthat of washer Q. vA bolt, t, having a square shoulder to fit theopening a',and a retaining-head coming against the outer side oftruck-arm L, is passed through the stud d,and

a nut, 25, and washer 25, upon its projecting 5 threaded end, arebrought against washer R, to clamp the Wheel and its two-part bearing tothe truck-arm. As shown in Fig. XVI, the inner ends of the washers O Rare not in contact, being held apart by the cone-faces of thewheel-bearing, the space thusleft permitting the approach of the washersin the wheel and on the stud,in taking up, by means of the screw nutupon bolt t, the wear of the journal-surfaces, and the conical washers.while not in contact, are held from rotating by spurs w from oneentering recesses y upon the near face of the other. The stud d does notextend through the combined washers, so that a space between its end andthe inner face of the washer permits the washer R, nut, and washer t tomove longitudinally upon the bolt t. By these means a tightjoint isformed at the journal to exclude all dust and moisture, and all wear ofthe journalsurfaces may be compensated for by the tightening of thejoint.

Now having described my invention,what I claim is.-

1. In lawn-mowers, a stationary cutter, B, having an end guided to movein one direction in the side Wall, A, wall A having opening atherethrough elongated in the direction of movement of cutter B,screw-pin c, projecting from wall A near the outer edge of opening a,spirally-grooved disk D, engaging with screwpin a, and adapted to berotated by a wrench, and bolt b, arranged to pass as an axis throughspirally-grooved disk D, and through opening a, to screw into cutter B,and provided with a head adapted to come against and hold the 40spiral-groove disk to the screw-pin and bind it in the position in whichit may be set, as and for the purpose set forth. 2. A lawn-mowercutter-shaft, 0, having an end shoulder thereto, a sleeve, E, upon saidshaft socketed within the side wall, A, and having ashouldercorresponding to that of the shaft and bearing against it, said sleeveprovided with an angular head, adapting it to be rotated by a wrench,two pairs of corresponding camsurfaces, e 0, upon the sleeve E and fixedwallA, respectively, adapted to cause the sleeve E an endwise movementupon being rotated, and a binding-screw, f, from the wall A, bearingupon sleeve E, to hold the same thereto, all combined and operating asand for the purpose set forth;

3. In lawn-mowers, a disk, H, prolonged from a side wall, A, astud-bolt, G, projecting outward therefrom centrally, and having a 60head, g, a block, h, raised from the disk-face upon one sideot'stud-bolt G, a block, 5, upon said disk-face upon the opposite side ofstudboltG from the one h, having aspace between it and the stud-bolt, asegmental rim, m, connecting blocks t and h, having the axis of studboltG for its center, and leaving a radial shoulder to block 2', and a fork,K, adapted to rest flat upon the disk-face, of width enabling it to passunder stud-bolt head g, provided with a hook end, n, adapted to bearupon the shoulder of block c and rest upon rim m, having an inner curvededge conforming to studbolt G, and an outer curved edgestarting fromhook n, and a shank whose parallel edges'are tangential to its curvededges, and an end edge extending from the hook end it radially to thebolt, and presenting a surface coinciding with one side of the block- 72when the shank is resting upon block i, and having its shank coincidingwith block h when its hook end is 8 resting against the shoulder ofblock 73, and adapted from said configuration to be rocked upon block'i, to have its end released from block 71, and from bolt G and its head9, substantially as shown and described. 8

4. A traction-Wheel for lawn-mowers, consisting of the combination, withan axle, J, of a series of wheels, I, uniformly corrugated upon eachlateral edge of their peripheral rims, and each provided with ajournal-bearing in 0 the form of a hub, having clutch-teeth upon eachend, and adapting said wheel to be clutched with an adjacent one on axleJ, to cause the corrugations of both to interlock, or have theirprojecting curves or salient angles 9 5 in contact, as and for thepurpose set forth.

5. The withindescribed tru'ckwheel and wheel-bearing for lawn-mowers,consisting of a' stud, d, upon truck-arm L, a wheel-hub having ajournal-bearing conically counter- :00

'boredfrom its ends to the center of the hub,

two cone-washers having theirfaces coinciding with the journal-bearingsurfaces of the hub, and arranged upon the stud, their ends truncatedand held to each other and to the armL r05 from rotation, spurs upon thewashers, and a screw-bolt, t, passing from arm L through the stud, andheld therein from rotation, and provided witha nut and washer upon itsprojecting end removed from contact with theIIo end of the stud andbearing upon one conical washer, all arranged substantially as shown,and operating to take up all wear of the journal-surfaces upon thetightening of the nut upon its bolt.

WILLIAM L. FRISBI-E.

Witnesses:

MARK POTTER, LOREN J. MERRIFIELD.

